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Clogging Behavior in HEPA Filters during Dynamic Filtration  

Kim Hyungsup (Department of Textile Engineering and Next-Generation Innovative Technology Research Institute, Konkuk University)
Jin Dong Sik (FITI Testing & Research Institute)
Cho Kwang-Soo (Department of Polymer Science, Kyungpook National University)
Seo Moon Hwo (Department of Textile Engineering and Next-Generation Innovative Technology Research Institute, Konkuk University)
Publication Information
Textile Science and Engineering / v.42, no.4, 2005 , pp. 248-254 More about this Journal
Abstract
The filtration behaviors of glass filters were studied by measuring the air permeability, pressure drop and SEM images of five HEPA grade filter material. Based on the observations, the filtration mechanism was described in terms of fiber diameter, packing density and filter depth. The results indicate that the finer fibers and fibers on/near the filter media surface show better filtration performance. Also the captured particles on the fibers formed dendrites, which influenced further filtration.
Keywords
HEPA filterfilter; efficiency; pressure drop; dendrites;
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